Cov teebmeem ntawm kev nce siab tuaj yeem ua rau tsis ua haujlwm tam sim ntawd lossis puas tsuaj rau cov khoom siv uas pom tseeb tsuas yog pom tseeb dhau lub sijhawm ntev dua. SPDs feem ntau raug teeb tsa hauv chav tsev neeg siv khoom los tiv thaiv kev teeb tsa hluav taws xob tab sis ntau hom SPD muaj los tiv thaiv kev teeb tsa los ntawm lwm cov kev pabcuam nkag, xws li cov xov tooj thiab cable TV. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias kev tiv thaiv kev teeb tsa hluav taws xob ib leeg thiab tsis yog lwm cov kev pabcuam tuaj yeem tawm lwm txoj hauv kev rau cov hluav taws xob transient nkag mus rau hauv kev teeb tsa.

Muaj peb hom Surge Protective Devices sib txawv:

• Hom 1 SPD ntsia rau ntawm qhov chaw pib, piv txwv li lub rooj tsavxwm faib khoom loj.
• Hom 2 SPD ntsia rau ntawm cov laug cam faib khoom me
  • (Muaj cov SPDs Hom 1 & 2 ua ke thiab feem ntau yog ntsia rau hauv cov chav tsev neeg siv khoom).
• Hom 3 SPD tau teeb tsa ze rau ntawm qhov khoom tiv thaiv. Lawv tsuas yog yuav tsum tau teeb tsa ua ib qho ntxiv rau Hom 2 SPD.

Yog tias xav tau ntau yam khoom siv los tiv thaiv kev teeb tsa, lawv yuav tsum tau sib koom ua ke kom ntseeg tau tias ua haujlwm tau zoo. Cov khoom uas muab los ntawm ntau lub tuam txhab tsim khoom yuav tsum tau lees paub tias sib xws, tus neeg teeb tsa thiab cov chaw tsim khoom ntawm cov khoom siv yog qhov zoo tshaj plaws los muab cov lus qhia txog qhov no.

Cov overvoltages transient yog dab tsi?

Cov hluav taws xob overvoltages ib ntus yog txhais tias yog cov hluav taws xob luv luv uas tshwm sim los ntawm kev tso tawm lub zog uas tau khaws cia ua ntej lossis raug tsim los ntawm lwm txoj hauv kev. Cov hluav taws xob overvoltages ib ntus tuaj yeem tshwm sim ntuj lossis tib neeg ua.

Cov overvoltages transient tshwm sim li cas?

Cov teeb meem uas tib neeg tsim tawm tshwm sim vim yog kev hloov cov cav thiab cov transformers, nrog rau qee hom teeb pom kev zoo. Keeb kwm qhov no tsis yog teeb meem hauv kev teeb tsa hauv tsev tab sis tsis ntev los no, kev teeb tsa tau hloov pauv nrog kev tshwm sim ntawm cov thev naus laus zis tshiab xws li kev them hluav taws xob tsheb, cov twj tso cua sov los ntawm huab cua / hauv av thiab cov tshuab ntxhua khaub ncaws uas tswj tau qhov ceev tau ua rau cov teeb meem uas tshwm sim ntau dua hauv kev teeb tsa hauv tsev.

Qhov hluav taws xob ntau dhau ib ntus ntuj tsim tshwm sim los ntawm kev xob laim tsis ncaj qha feem ntau yuav tshwm sim los ntawm kev xob laim ncaj qha rau ntawm txoj kab hluav taws xob lossis xov tooj uas nyob ib sab ua rau qhov hluav taws xob ntau dhau mus raws txoj kab, uas tuaj yeem ua rau muaj kev puas tsuaj loj rau kev teeb tsa hluav taws xob thiab cov khoom siv cuam tshuam.

Kuv puas yuav tsum tau muaj SPDs ntsia?

Tsab cai tshiab ntawm IET Wiring Regulations, BS 7671: 2018, hais tias tshwj tsis yog tias muaj kev ntsuam xyuas kev pheej hmoo, kev tiv thaiv tiv thaiv kev hloov pauv hluav taws xob ib ntus yuav tsum muab rau qhov twg qhov tshwm sim los ntawm kev hloov pauv hluav taws xob tuaj yeem:

• Ua rau raug mob hnyav lossis poob, tib neeg lub neej; lossis
• Ua rau muaj kev cuam tshuam rau cov kev pabcuam pej xeem thiab/lossis kev puas tsuaj rau cov cuab yeej cuab tam kab lis kev cai; lossis
• Ua rau muaj kev cuam tshuam rau kev lag luam lossis kev ua haujlwm hauv kev lag luam; lossis
• Ua rau muaj kev cuam tshuam rau ntau tus neeg nyob ua ke.

Txoj cai no siv rau txhua hom chaw uas suav nrog tsev neeg, lag luam thiab kev lag luam.

Hauv tsab ntawv tshaj tawm dhau los ntawm IET Wiring Regulations, BS 7671: 2008 + A3: 2015, muaj kev zam rau qee lub tsev nyob hauv tsev kom tsis txhob muaj kev tiv thaiv hluav taws xob ntau dhau, piv txwv li, yog tias muab nrog cov xov hlau hauv av, tab sis qhov no tau raug tshem tawm thiab tam sim no nws yog qhov yuav tsum tau ua rau txhua hom chaw suav nrog cov chav tsev ib leeg. Qhov no siv rau txhua lub tsev tshiab thiab cov khoom vaj khoom tsev uas tau rov ua dua tshiab.

Txawm hais tias IET Wiring Regulations tsis yog rov qab los, qhov twg ua haujlwm tau ua tiav ntawm lub voj voog uas twb muaj lawm hauv kev teeb tsa uas tau tsim thiab teeb tsa rau tsab ntawv dhau los ntawm IET Wiring Regulations, nws yog qhov tsim nyog los xyuas kom meej tias lub voj voog hloov kho ua raws li tsab tshiab, qhov no tsuas yog yuav pab tau yog tias SPDs raug teeb tsa los tiv thaiv tag nrho kev teeb tsa.

Qhov kev txiav txim siab txog seb puas yuav yuav SPDs yog nyob rau hauv tes ntawm tus neeg siv khoom, tab sis lawv yuav tsum tau muab cov ntaub ntawv txaus kom txiav txim siab tau zoo txog seb lawv puas xav tshem tawm SPDs. Kev txiav txim siab yuav tsum tau ua raws li cov yam ntxwv kev pheej hmoo kev nyab xeeb thiab tom qab kev ntsuam xyuas tus nqi ntawm SPDs, uas yuav raug nqi tsawg li ob peb puas phaus, piv rau tus nqi ntawm kev teeb tsa hluav taws xob thiab cov khoom siv txuas nrog nws xws li cov khoos phis tawj, TVs thiab cov khoom siv tsim nyog, piv txwv li, kev ntes pa luam yeeb thiab kev tswj boiler.

Cov khoom tiv thaiv hluav taws xob ntau dhau yuav raug ntsia rau hauv lub tshuab hluav taws xob uas twb muaj lawm yog tias muaj qhov chaw tsim nyog lossis, yog tias tsis muaj qhov chaw txaus, nws tuaj yeem ntsia rau hauv lub thawv sab nraud uas nyob ib sab ntawm lub tshuab hluav taws xob uas twb muaj lawm.

Nws tseem tsim nyog kuaj xyuas nrog koj lub tuam txhab pov hwm vim tias qee cov cai yuav hais tias cov khoom siv yuav tsum tau npog nrog SPD lossis lawv yuav tsis them nyiaj yog tias muaj kev thov.